Safety device for elevators.



A LEAL.

SAFETY DEVICE FOR ELEVATORS.

APPLICATION FILED MAR. 3. 1915.

Patented Jan. 11, 1916.

// g Q if}? 2/ 7 5 /9 0 4 w w g w 4 z 4 5 /E n /L E 5234; MM 6' N ,4 ll7T If E 5 ANTONE LEAL, OF SELMA, GALIEQRNIA,

SAFETY DEVICE FOR-ELEVATORS.

Speeificationof LettersPatcnt.

Patented Jan. 11., 1916;,

Application filed lltlarch 3, 1915: SerialjNm 11 775,,

To, allflwiiomz't, may concern:

Be it, known, that: I, A TONE. LEAL, a citie.

Zen of the United States,residing at Selma,

in the county of Fresno andState of Cali fornia, have invented certain;new and useful Improvements in Safety .Devices. for

Elevators, ofwhich the following is av specification, reference beinghad to v the accompanying, drawings.

This invention relates to certain improvementsin safety devicesforelevators; and

an object of the invention is to provide a. devlce of thlsgeneralcharacter havlng novel. and improved means whereby the cagewi-ll.

be automatically. held against downward movement at substantiallythe-moment, the,

hoisting cableparts and whereby. the device is maintained inoperativeunder the influence of the draft tension.

The invention consists in the details. of construction and inthecombination and arrangement of the several parts of my improvedsafety device whereby certain important advantages 5 are attained; andthe device is rendered simpler, less expensive and otherwise moreconvenient and advantageous for, use, all. aswwill be hereinafter mo-rev fully set forth.

The novel features of the invention will be carefully defined in theappended claim.

In order that my invention may be the better understood, I will nowproceed to describe the same with reference to the accompanyingdrawings, wherein Figure 1 is a view, partly in elevation and partly insection, illustrating a safety device for elevators constructed inaccordance with an embodiment of my invention; Fig. 2 is a view inelevation illustrating the mounting and operation of the cam or clutchmembers herein included, the pivots therefor being shown in section;Fig. 3 is a fragmentary view in elevation illustrating said clutch orcam members in operative engagement with the guides; and Fig. 4 is aview in perspective, detached, of a cam or clutch member hereinincluded.

As disclosed in the accompanving drawings, the guides 1 are operativelyengaged with the upright timbers 2 connected at the top of a crosstimber 3. Coacting with the guides 1 are the shoes 4 secured to thevertically disposed standards 5 operatively engaged with the oppositesides of the cage A. The standards 5 project a predetermined distanceabove the cage A and are tied or connected at their, upperextremities.by; a crossbeam- 6 andthe upper-portions of said uprightsj are providedwiththe elongated; longitudinally disposed openings 7 through, which areprojected the reduced. extremities 8 of. the levers 9, said levers beingprovided intermediate their lengths with the upstanding cars 10positioned between the depending ears carriedby the crossbeam 6 andpivotally supported thereby, through the medium of the pin 11. thelevers 9 are reduced as indicated at; 1,2, and disposed within thelowerportion of the stirrup 14 straddling thecrossbeam 6, said cross.beam having; its opposite longitudinal portions reduced, as at 15, toserve; as. guides. for such stirrup Operatively, engaged with theupperextremity of the stirrup is; the-- hoisting cable 16. It isalsotobe observed that the stirrup ..14 is provided at a; predetermineddis! tance above the lower extremity thereofwith thepartitionor plate 17which, upon downward movement being imparted to the stirrupindependently of; the cross beam 6,,

will serve to cause upward movement of the outer or reduced.extremities: 8 offlthe lever-s 9, for a purpose which will hereinafterbe more particularly referred to. The clownward independent movement ofthe stirrup 14 is adapted to be automatically accomplished upon partingof the hoisting cable 16 and, as herein disclosed, this movement isaccomplished through the medium of the retractable member 18, hereindisclosed as a conventional coil spring, one extremity whereof beingsecured to the lower portion of the stirrup while the opposite extremitythereof is suitably anchored to the top of the cage A.

The upper extremity of each of the uprights 5 is provided with theoppositely disposed lateral extensions 19 to which are pivotally securedthe cams or clutch members 20 having their engaging surfaces toothed asat 21 to coact with the toothed side faces 22 of the guides 1 whenupward movement is imparted thereto. Projecting inwardly from theengaging surfaces of the cams or clutch members 20 at the top thereofare the arms or fingers 23 adapted to overlie the reduced extremities 8of the levers 9 so that upon downward movement being imparted to thestirrup 14 under the infiuence of the retractable member 18 the cam orclutch members 20 will be elevated and The rear extremities. of

-' the pivot pin 26 disposed through an extension 19 and through anupper extremity of a link 27, the opposite extremity of which beingsecured to an adjacent shoe 4, and in pratice I find it of advantage tohave said pivot pin surrounded by the bearing sleeve 28, for a purposewhich is believed to be self-evident.

From the foregoing description, it is thought to be obvious that asafety device constructed in accordance with my invention is of anextremely simple and comparatively inexpensive nature and isparticularly well adapted for use by reason of the convenience andfacility with which it may be assembled, and it will also be obviousthat my invention is susceptible of some change and modification withoutmaterial departure from the principles and spirit thereof and for thisreason I do not wish to be understood as limiting myself to the precisearrangement and formation of the several parts herein shown in carryingout my invention in practice.

I claim:

In combination with guide-ways, a cage mounted for movementlongitudinally of the guide-ways. uprights carried by the cage andprojecting thereabove, a cross beam connecting said uprights, extensionsprojecting in opposite directions from the upper portions of each of theuprights, clutch members pivotally engaged with the extensions andadapted to coact with the guides, each of said clutch members beingprovided with an inwardly disposed extension, levers pivotally supportedintermediate their lengths by the cross beam and having their outerextremities underlying the extensions of the clutch members, outwardlydisposed lugs carried by the extensions of the uprights overlying theclutch members and serving to limit the upward movement of said clutchmembers, a stirrup straddling the cross beam and underlying the innerextremities of the levers, an expansible member interposed between thestirrup and the cage, and a hoisting member secured to the stirrup, theengaging surfaces of the clutch members being toothed and the coactingsurfaces of the guides being also toothed.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

ANTONE LEAL. WVitnesses:

CHESTER E. SHEPARD, E. E. SHEPARD.

Copies of this patent. may be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. C.

